Jump to content
Sign in to follow this  
eskimobob

Sub 1GHz Wireless modules

Recommended Posts

Hi all,

I've a need for a wireless link and have decided on 433MHz so it is suitable for worldwide use. I'm planning to use the SimpliciTI protocol to avoid having to design my own protocol. I've bought a 433MHz Chronos kit to get me started quickly and that works nicely.

 

What I now was expecting to buy were some DIP style modules with the CC430 (or similar) MCU where the RF side of things is already taken care of. I had expected something along the lines of the XBEE DIP modules (although they are 2.4GHz ZIGBEE). I can't seem to find these sort of modules - am I simply missing them?

 

I can find low cost 433MHz modules on Farnell but I'd need a separate MCU and it would defeat the idea of using the CC430 SoC.

Share this post


Link to post
Share on other sites

I am unaware of any CC430-based commercially-available solutions at 433MHz. Olimex makes one at 900MHz. There was the People Power SuRF board, but that was only 900MHz and they're out of the hardware business now. For 433MHz, the only I've found is the Anaren AIR boosterpack, but those are currently also only available at 900Mhz, though that's supposed to get fixed come spring.

 

It's a shame, because the CC430 was a nice idea, but at last look TI still hasn't released ones with reasonable memory for 6lowpan-type applications, so the only path is a larger MCU with a CC1101 on the SPI bus.

Share this post


Link to post
Share on other sites

Thanks for your response. I was hoping someone would point out something I had missed but sadly not :cry:

I had seen the Olimex module before but had discounted it because of frequency - perhaps I should rethink.

 

I agree it is a shame and it seems short sighted of TI - I think TI sometimes think of the hobby user and of the large corporation but forget the smaller company trying to develop a product on a tight budget and short timescale.

 

If the CC430 is not available in module format then I am more tempted to buy a cheap ready made 433MHz transceiver module instead and attach a separate MCU.

Share this post


Link to post
Share on other sites
I wish I'd gone for one of the higher frequency models.

 

Ditto :roll:

 

We can start a group buy for this. There is already a current gb for the CC2500 from the same vendor. We'll be able to combine and save on shipping if many people are interested. I can also buy and keep some in the shop.

 

Hmmm - that is interesting...

I didn't realise the 2.4GHz modules would be cheaper than the 433MHz modules??

I don't need 2.4GHz but since they are also suitable for worldwide use I could potentially use it instead - I did have a play with an ezRF2500 dev kit last year - need to refresh my memory. I am guessing these are not likely to come with any FCC/CE approvals :problem:

 

Will have a think and get back to your over the weekend 8-)

Share this post


Link to post
Share on other sites
Why not design one and build it?

Time to market - I'm no expert on RF layout and would rather not subsequently struggle due to range and/or EMC problems.

From what I saw from the software sidelines at People Power, your earlier concern about FCC qualification is also highly relevant: the folks involved were essentially told to get a module approved and then re-use it in multiple applications/configurations.

Share this post


Link to post
Share on other sites

Anaren offers a target board with 433 MHz and MSP-430 that plugs into TI's EZ430-RF2500 dev kit. Take a look at Anaren's AIR modules and look for the A1101R04C. You will also need an antenna from Anaren (66089-0406). The AIR modules are available from Arrow and Mouser worldwide, and Avnet in North America.

 

I hope that this helps.

 

Best regards,

Geof

Share this post


Link to post
Share on other sites
Anaren offers a target board with 433 MHz and MSP-430 that plugs into TI's EZ430-RF2500 dev kit. Take a look at Anaren's AIR modules and look for the A1101R04C. You will also need an antenna from Anaren (66089-0406). The AIR modules are available from Arrow and Mouser worldwide, and Avnet in North America.

 

Thanks Geof :thumbup:

They look interesting - I see they are stating (Coming Spring 2012!) - not long...

Share this post


Link to post
Share on other sites

I was interested in the CC430 series and bought the USB/JTAG module along with the 2 CC430F6x experiment boards with the RF transceiver from TI (about $200 bucks!) but got them working (i.e. communicating) fairly easily out of the box... I thought of designing a smaller version (and much less expensive of course) for my own project, since I can't exactly use the breakout boards for that... do you think there's enough interest out there to go a bit further and make a cheap project board around this MCU? Thanks for the input...

Share this post


Link to post
Share on other sites
I was interested in the CC430 series and bought the USB/JTAG module along with the 2 CC430F6x experiment boards with the RF transceiver from TI (about $200 bucks!) but got them working (i.e. communicating) fairly easily out of the box... I thought of designing a smaller version (and much less expensive of course) for my own project, since I can't exactly use the breakout boards for that... do you think there's enough interest out there to go a bit further and make a cheap project board around this MCU? Thanks for the input...

 

I'd be quite interested in that, if the price came out something reasonable.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...